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Rv0298 | Hypothetical protein; Antitoxin component of a type II toxin-antitoxin (TA) system. Upon expression in M.smegmatis neutralizes the effect of cognate toxin Rv0299. (75 aa) | ||||
Rv0299 | Hypothetical protein; Toxic component of a type II toxin-antitoxin (TA) system. Upon expression in M.smegmatis inhibits colony formation. Its toxic effect is neutralized by coexpression with cognate antitoxin Rv0298/MT0312. (100 aa) | ||||
mazF1 | Possible toxin MazF1; Toxic component of a type II toxin-antitoxin (TA) system, its cognate antitoxin is MazE1 (Probable). Probably an endoribonuclease (By similarity); Belongs to the PemK/MazF family. (93 aa) | ||||
mazE1 | Possible antitoxin MazE1; Antitoxin component of a type II toxin-antitoxin (TA) system. (57 aa) | ||||
mazF2 | Toxin MazF2; Toxic component of a type II toxin-antitoxin (TA) system. Upon expression in E.coli partially inhibits cell growth after one cell generation. Its cognate antitoxin is MazE2. Probably an endoribonuclease (By similarity); Belongs to the PemK/MazF family. (102 aa) | ||||
mazE2 | Possible antitoxin MazE2; Antitoxin component of a type II toxin-antitoxin (TA) system. (81 aa) | ||||
mazF3 | Toxin MazF3; Toxic component of a type II toxin-antitoxin (TA) system. Acts as an mRNA and 23S rRNA interferase, cleaving predominantly after the first 2 Us in the sequence 5'-UUCCU-3'; in 23S rRNA only cleaves once in the ribosomal A site in dissociated but not intact ribosomes. Cleavage of 23S rRNA inhibits protein translation; the 23S rRNA region cleaved is involved in tRNA-binding in the A site, 30S and 50S subunit interaction and ribosome recycling factor association. Upon expression in E.coli and M.smegmatis inhibits cell growth and colony formation. It dramatically increases per [...] (103 aa) | ||||
mazE3 | Possible antitoxin MazE3; Antitoxin component of a type II toxin-antitoxin (TA) system. Upon expression in E.coli and M.smegmatis neutralizes the effect of cognate toxin MazF3. Overexpression of MazE3 alone decreased persister cells formation in M.smegmatis upon challenge with gentamicin or kanamycin. (106 aa) | ||||
relE | Toxin RelE; Toxic component of a type II toxin-antitoxin (TA) system. Has RNase activity (By similarity). Overexpression in M.tuberculosis or M.smegmatis inhibits colony formation in a bacteriostatic rather than bacteriocidal fashion. Its toxic effect is neutralized by coexpression with cognate antitoxin RelB (shown only for M.smegmatis). (97 aa) | ||||
relB | Antitoxin RelB; Antitoxin component of a type II toxin-antitoxin (TA) system. Upon expression in M.smegmatis neutralizes the effect of toxin RelE. (89 aa) | ||||
mazF5 | Possible toxin MazF5; Toxic component of a type II toxin-antitoxin (TA) system. Upon expression in M.smegmatis inhibits colony formation. Its toxic effect is neutralized by coexpression with cognate antitoxin MazE5. Probably an endoribonuclease (By similarity). (109 aa) | ||||
mazE5 | Possible antitoxin MazE5; Antitoxin component of a type II toxin-antitoxin (TA) system. Upon expression in M.smegmatis neutralizes the effect of cognate toxin MazF5. (125 aa) | ||||
Rv1944c | Conserved protein; Rv1944c, (MTCY09F9.20), len: 196 aa. Conserved protein, similar to C-terminal part of SCE20.29|AL136058|CAB65585.1 hypothetical protein from Streptomyces coelicolor (338 aa), blastp scores, Identities = 37/131 (28%), Positives = 51/131 (38%). (196 aa) | ||||
Rv1954c | Hypothetical protein; Rv1954c, (MTCY09F9.10), len: 173 aa. Hypothetical unknown protein, end overlaps next ORF upstream, Rv1955 (MTCY09F9.09c). (173 aa) | ||||
higB | Possible toxin HigB; Toxic component of an atypical, type II toxin-antitoxin chaperone (TAC) system. Upon expression in M.smegmatis inhibits colony formation and cell growth. Ectopic expression in wild-type M.tuberculosis has no effect on cell growth; ectopic expression in a triple higB1-higA1-Rv1957 (delta TAC) disruption mutant causes growth arrest, killing a considerable proportion of the cells. Increased ectopic expression leads to decreased levels of IdeR- and Zur-regulated genes as well as cleavage within the mRNA region of tmRNA (transfer-mRNA), strongly suggesting it is an endo [...] (125 aa) | ||||
higA | Possible antitoxin HigA; Antitoxin component of an atypical, type II toxin-antitoxin chaperone (TAC) system. Upon expression in M.smegmatis neutralizes the effect of cognate toxin HigB1. Neutralization of HigB1 toxin in E.coli or M.marinum also requires SecB-like chaperone Rv1957, making this the first toxin-antitoxin chaperone (TAC) system. Antitoxin aggregation and degradation are prevented by the chaperone. (149 aa) | ||||
secBL | Hypothetical protein; Chaperone component of an atypical, type II toxin-antitoxin chaperone (TAC) system. Prevents antitoxin HigA1 aggregation in vitro at a 1:3 chaperone:antitoxin ratio, probably also protects antitoxin HigA1 from protease. Required for neutralization of toxin HigB1 upon ectopic expression in Mycobacterium marinum or E.coli. When expressed in E.coli complements a secB deletion, restores export of OmpA and MBP and inhibits aggregation of proOmpC although it is less efficient than endogenous SecB. Complements the general chaperone function of E.coli SecB less well; Belo [...] (181 aa) | ||||
mazE6 | Antitoxin MazE6; Antitoxin component of a type II toxin-antitoxin (TA) system. Upon expression in E.coli and in M.smegmatis counteracts the ribonuclease activity of cognate toxin MazF6. (82 aa) | ||||
mazF6 | Toxin MazF6; Toxic component of a type II toxin-antitoxin (TA) system. Upon expression in E.coli and in M.smegmatis partially inhibits cell growth and colony formation; its toxic effect is neutralized by coexpression with cognate antitoxin MazE6. Acts as an mRNA interferase on ssRNA, cleaving between the second and third bases in the sequences CUCCU and UUCCU. Further experiments demonstrate that it digests between the first and second bases of UCCUU, yielding a 5'- hydroxyl end; digests M.tuberculosis mRNA (in coding as well as the 5'- and 3'-UTR regions) and 23S rRNA, digests E.coli [...] (114 aa) | ||||
vapB45 | Conserved protein; Possibly the antitoxin component of a type II toxin-antitoxin (TA) system. Its cognate toxin is VapC45. (239 aa) | ||||
vapC45 | Conserved protein; Toxic component of a type II toxin-antitoxin (TA) system. An RNase. The cognate antitoxin is VapB45. (138 aa) | ||||
higA2 | Transcriptional regulatory protein; Putative antitoxin component of a type II toxin-antitoxin (TA) system. Its cognate toxin would be HigB2. (101 aa) | ||||
higB2 | Conserved protein; Putative toxic component of a type II toxin-antitoxin (TA) system. Its cognate antitoxin would be HigA2. Belongs to the mycobacterial HigB family. (201 aa) | ||||
Rv2061c | Conserved protein; Rv2061c, (MTV019.02c), len: 134 aa. Conserved protein. Similar to many. Contains IPR019965 F420-dependent enzyme, PPOX class, family Rv2061, domain. A core mycobacterial gene; conserved in mycobacterial strains (See Marmiesse et al., 2004). (134 aa) | ||||
mazE7 | Antitoxin MazE7; Antitoxin component of a type II toxin-antitoxin (TA) system. Upon expression in E.coli but not in M.smegmatis neutralizes the effect of cognate toxin MazF7. (77 aa) | ||||
mazF7 | Possible toxin MazF7; Toxic component of a type II toxin-antitoxin (TA) system. Upon expression in E.coli and M.smegmatis inhibits cell growth and colony formation. Its toxic effect is neutralized by coexpression with cognate antitoxin MazE7. Probably an endoribonuclease (By similarity); Belongs to the PemK/MazF family. (136 aa) | ||||
mazE9 | Possible antitoxin MazE9; Antitoxin component of a type II toxin-antitoxin (TA) system. Upon expression in E.coli and M.smegmatis neutralizes the effect of cognate toxin MazF9. (76 aa) | ||||
mazF9 | Toxin MazF9; Toxic component of a type II toxin-antitoxin (TA) system. Upon expression in E.coli and M.smegmatis inhibits cell growth and colony formation. Its toxic effect is neutralized by coexpression with cognate antitoxin MazE9. Acts as an mRNA interferase, specifically cleaving between U and C in UAC sequences. May cleave its cognate antitoxin's gene. In E.coli expression with non- cognate antitoxins VapB27 and VapB40 partially neutralizes the toxin. Belongs to the PemK/MazF family. (118 aa) | ||||
Rv2802c | Rv2802c, (MTCY16B7.41), len: 347 aa. Hypothetical unknown arg-, ala-rich protein. C-terminus shows some similarity with N-terminal part of hypothetical proteins Q98K84|MLR1592 from Rhizobium loti (Mesorhizobium loti) (104 aa), FASTA scores: opt: 138, E(): 0.12, (37.35% identity in 91 aa overlap); and CAC47718|SMC03294 from Rhizobium meliloti (Sinorhizobium meliloti) (114 aa), FASTA scores: opt: 128, E(): 0.53, (31.4% identity in 86 aa overlap). Equivalent to AAK47191 from Mycobacterium tuberculosis strain CDC1551 (357 aa) but shorter 10 aa. This region is a possible MT-complex-specific [...] (347 aa) | ||||
Rv2803 | Rv2803, len: 155 aa. Conserved hypothetical protein,similar to hypothetical proteins from other organisms, and with some similarity to C-terminal part of Rv0918|Z95210_12 hypothetical protein from Mycobacterium tuberculosis (158 aa), FASTA scores: opt: 204, E(): 9e-07, (42.35% identity in 85 aa overlap). Replaces original 2803c on other strand. This region is a possible MT-complex-specific genomic island (See Becq et al., 2007). (155 aa) | ||||
relF | Antitoxin RelF; Antitoxin component of a type II toxin-antitoxin (TA) system. Upon expression in M.smegmatis neutralizes the effect of toxin RelE2. (93 aa) | ||||
relG | Toxin RelG; Toxic component of a type II toxin-antitoxin (TA) system. Has RNase activity and preferentially cleaves at the 3'-end of purine ribonucleotides (By similarity). Overexpression in M.tuberculosis or M.smegmatis inhibits colony formation in a bacteriostatic rather than bacteriocidal fashion. Its toxic effect is neutralized by coexpression with cognate antitoxin RelB2 (shown only for M.smegmatis). Overexpression also increases the number of gentamicin-tolerant and levofloxacin-tolerant persister cells. (87 aa) | ||||
Rv3098A | PemK-like protein; Putative toxic component of a possible type II toxin- antitoxin (TA) system. Its toxic effect may be neutralized by cognate antitoxin Rv3098B/RVBD_3098B; Belongs to the PemK/MazF family. (106 aa) | ||||
Rv3098c | Hypothetical protein; Rv3098c, (MTCY164.09c), len: 150 aa. Hypothetical unknown protein (shorter version of MTCY164.09c). This region is a possible MT-complex-specific genomic island (See Becq et al., 2007). (150 aa) | ||||
vapC49 | Hypothetical alanine rich protein; Toxic component of a type II toxin-antitoxin (TA) system. An RNase. Its cognate antitoxin is VapB49 (By similarity). (144 aa) | ||||
vapB49 | Conserved protein; Possibly the antitoxin component of a type II toxin-antitoxin (TA) system. Its cognate toxin is VapC49 (Potential). (150 aa) | ||||
higB3 | Conserved hypothetical protein; Putative toxic component of a type II toxin-antitoxin (TA) system. Its cognate antitoxin would be HigA3. Not toxic upon expression in M.smegmatis. (114 aa) | ||||
higA3 | Possible transcriptional regulatory protein; Putative antitoxin component of a type II toxin-antitoxin (TA) system. Its cognate toxin would be HigB3. (109 aa) | ||||
relJ | Antitoxin RelJ; Antitoxin component of a type II toxin-antitoxin (TA) system. A probable antitoxin for the putative mRNA interferase RelK. Upon expression in E.coli but not in M.smegmatis this protein neutralizes E.coli YoeB. (91 aa) | ||||
relK | Toxin RelK; Toxic component of a type II toxin-antitoxin (TA) system. Has RNase activity and preferentially cleaves at the 3'-end of purine ribonucleotides (By similarity). Overexpression in M.tuberculosis or M.smegmatis inhibits colony formation in a bacteriostatic rather than bacteriocidal fashion. Its toxic effect is neutralized by coexpression with antitoxin RelJ (shown only for M.smegmatis). Overexpression also increases the number of rifampcin-tolerant persister cells. Belongs to the YoeB family. (85 aa) | ||||
vapB48 | Possible antitoxin VapB48; Possibly the antitoxin component of a type II toxin-antitoxin (TA) system. Its cognate toxin is VapC48. (74 aa) | ||||
vapC48 | Possible toxin VapC48. Contains PIN domain; Toxic component of a type II toxin-antitoxin (TA) system. An RNase. Its cognate antitoxin is VapB48.; Belongs to the PINc/VapC protein family. (145 aa) | ||||
Rv3698 | Conserved protein; Rv3698, (MTV025.046), len: 509 aa. Conserved protein, highly similar to Q9AK89|SC10A9.15c conserved hypothetical protein from Streptomyces coelicolor (505 aa),FASTA scores: opt: 1720, E(): 9e-103, (53.65% identity in 494 aa overlap). N-terminal end highly similar to CAC42136|SCBAC25F8.01 conserved hypothetical protein (fragment) from Streptomyces coelicolor (291 aa), FASTA scores: opt: 1078, E(): 8.7e-62, (52.6% identity in 291 aa overlap); and C-terminus highly similar to CAC44687|SCBAC17A6.42c (235 aa), FASTA scores: opt: 911,E(): 3.8e-51, (57.25% identity in 234 a [...] (509 aa) | ||||
Rv3699 | Conserved protein; Rv3699, (MTV025.047), len: 233 aa. Conserved protein, showing similarity with hypothetical proteins e.g. Q9P3V6|SPAC1348.04 (alias Q9P3E7|SPAC750.03c or Q9P7U5|SPAC977.03) from Schizosaccharomyces pombe (Fission yeast) (145 aa), FASTA scores: opt: 188, E(): 7.5e-05,(31.65% identity in 120 aa overlap); and Q9KB70|BH2058 from Bacillus halodurans (241 aa) FASTA scores: opt: 185, E(): 0.00018, (27.8% identity in 162 aa overlap); Q9XA90|SCF43A.25c putative methyltransferase from Streptomyces coelicolor (215 aa), FASTA scores: opt: 166,E(): 0.0025, (29.95% identity in 147 [...] (233 aa) | ||||
vapC50 | Conserved hypothetical protein; Toxic component of a type II toxin-antitoxin (TA) system. An RNase. The cognate antitoxin is VapB50. (169 aa) | ||||
vapB50 | Possible excisionase; Possibly the antitoxin component of a type II toxin-antitoxin (TA) system. Its cognate toxin is VapC50. (130 aa) |